"Glucose sparing" is brought about by
a. epinephrine.
b. norepinephrine.
c. aldosterone.
d. cortisol.
e. growth hormone.
D
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Which statement related to gymnosperm reproduction is true?
A. Many gymnosperms rely on insects for pollination. B. Gymnosperms, like ferns, alternate generations. C. Gymnosperm reproduction is so inefficient that gymnosperms do not grow very tall or live for very long. D. Spores produce pollen grains, which contain sperm.
The male reproductive whorl of a flower typically consists of one or more
a. petals. b. carpels. c. stamens. d. receptacles. e. sepals.
Which drug results in the development of infants
without arms or legs if taken during pregnancy? a. tetracycline b. thalidomide c. streptomycin d. salicylic acid e. codeine
The nerve impulse moves along the neuron because
A. a current flows along the cell. B. sodium ions flow from one end of the cell to the other. C. there is a high concentration of sodium ions at one end of the cell and a high concentration of potassium ions at the other end of the cell. D. depolarization of one portion of the nerve cell membrane changes the permeability of the adjacent portion of the membrane, allowing it to depolarize as well.